MSM5416258B-30JS データシートの表示（PDF） - Oki Electric Industry
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MSM5416258B-30JS
Oki Electric Industry
MSM5416258B-30JS Datasheet PDF : 20 Pages
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AC CHARACTERISTICS (1/2)
Parameter
Symbol
Random read or write cycle time
Read/Write cycle time
Hyper page mode cycle time
Fast page mode read/write cycle time
Access time from RAS
Access time from CAS
Access time from column address
Access time from OE
Access time from CAS precharge
Data hold after CAS low
Output buffer turn-off delay time
tRC
tRMW
tHPC
tPRMW
tRAC
tCAC
tAA
tOEA
tCPA
tCOH
tOFF
MSM5416258B
-28
MIN MAX
48
70
12
34
28
9
15
9
17
3
3
7
MSM5416258B
-30
MIN MAX
55
75
13
35
30
9
16
9
18
3
3
8
(Vcc =5V±10%, Ta =0~70°C)
MSM5416258B
-35
Unit
MIN MAX
Note
60
ns
85
ns
13
ns
45
ns
35 ns 7,12,13
10 ns
7,12
19 ns
7,13
10 ns
21 ns
7,12
3
ns
17
3
8 ns
8
OE to data output buffer turn-off
delay time
tOEZ
3
7
3
8
3
8 ns
8
RAS to data output buffer turn-off
tREZ
delay time
3
7
3
8
3
8 ns
8
WE to data output buffer turn-off
delay time
tWEZ
3
7
3
8
3
8 ns
8
Transition time
tT
2
35
2
35
2
35 ns
Refresh preiod
tREF
8
8
8 ms
RAS precharge time
tRP
17
18
20
ns
RAS pulse width
tRAS
28 10,000 30 10,000 35 10,000 ns
RAS pulse width (Fast page mode) tRASP
28 100,000 30 100,000
35 100,000 ns
RAS hold time
tRSH
7
7
8
ns
RAS hold time reference to OE
tROH
7
7
8
ns
CAS precharge time
tCP
4
4
4
ns
CAS pulse width
tCAS
5
10,000
5
10,000
5 10,000 ns
CAS hold time
tCSH
22
25
30
ns
CAS to RAS precharge time
tCRP
5
5
5
ns
RAS to CAS delay time
tRCD
10
19 11
22
13
26 ns
12
RAS to column address delay time tRAD
8
13
8
15
10
16 ns
Row address set-up time
tASR
0
0
0
ns
13
Row address hold time
tRAH
6
6
7
ns
Column address set-up time
tASC
0
0
0
ns
Column address hold time
tCAH
5
5
5
ns
Column address hold time from RAS tAR
21
22
25
ns
Column address to RAS lead time
tRAL
15
18
20
ns
Read command set-up time
tRCS
0
0
0
ns
9
Read command hold time
tRCH
0
0
Read command hold time
reference to RAS
tRRH
0
0
0
ns
0
ns
9
WE pulse width
tWEP
10
10
10
ns
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